I'm glad to be a new member of this community . I need some help with my laptop. Debian 9 works on the x230t very smooth, but the Pen recognization is a problem for me. I work actually with JS and I need a input device recognization, which works under windows, but not under debian. (have a look at the code)

That "problem" is "driver" (firmware) related. Witch image did you install? Let me guess you got the free version, take the one with non-free packages, if even after that you pen still recognizes as mouse, it's because the hardware needs specific software to run like so, and this is not supported yet by Debian.

"Great spirits have always encountered violent opposition from mediocre minds."Albert Einstein"All wrong-doing arises because of mind. If mind is transformed can wrong-doing remain?"Buddha